Broken Bolts on exhaust/DEF injector failure

[t John]

Did you remove the DPF to drill out the studs or just drill them out under the truck? I'm asking because I'm at the same point with my truck. Also where did you get the replacement hose connector for the DEF line? I believe my connector is fine, but the DEF line will leak without replacing the partially melted fitting.

I'm having the same issue right now; sounds like 3/8" SS bolts are what you used? I will be making the trip to the store today.

 

[biodiesel]

I'm on the road at the moment, but I should be nearing 117,500 miles by the time we get back home. The truck will be due for an oil change, so I'll inspect the studs once again. I should probably wrap the DEF Injector/wires with aluminum high heat tape just in case the failure occurs when I'm on a longer road trip. I'd hate to scorch the wires and melt the DEF injector. I sure wish the studs would fail, though! My AEM warranty is about to expire!

 

[jlampman]

Hey Folks
Take a look at this pic, those are new bolts on that flange. they broke off while driving, that DEF injector (sorry if im not naming these correctly) was melted from the heat that came from the exhaust after the bolts broke and heat escaped upward.View attachment 2423This is my buddies truck. apparently 3k repair bill.
posting this as you owners of earlier trucks may want to check yours to ensure they are not rusting. Prob a good idea to replace them with stainless steel bolts. For you knowledgeable lads this is simple to find, for guys like me, lie down beside your passenger side door, look under your vehicle and you will see it.
Frank

I have the same problem. Do you have a part number for the DEF injector wiring harness? Mine has melted and dealer costs a fortune to fix. Any help is appreciated!!